Tunable smart mid infrared thermal control emitter based on phase change material VO2 thin film

Using phase change material VO2, we design intelligent thermal control emitter in mid-infrared band. The multilayer films composed of VO2-Ge-VO2-Ag have an emissivity of 0.78 at high temperature, an emissivity of 0.10 at low temperature, and a radiation regulation capacity of 0.68 at 5–13 μm. The structure has good thermal control emission performance. And it can be well used in aerospace, engineering insulation and other fields.